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How do heap overflow attacks exploit heap spraying?

How do heap overflow attacks exploit heap spraying?

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Heap overflows take advantage of the heap internal structure. Consecutive heap requests generate consecutive memory chunks. Each chunk consists of a header, which contains the chunk’s metadata, and the actual memory space in the requested size. Heap overflow vulnerabilities will overflow the memory space.Once the attacker is able to overwrite and control a heap address, the main objective is to resolve the shellcode’s address. This is what leads to heap spray.

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